The former social network site for students now has become:
"Facebook at its core, is a profile and presence aggregator, channeling all of my online activity through one main hub, combining almost every online “social” tool that I use currently." (http://www.briansolis.com/2007/08/facebook-is-online-hub-for-connected.html)
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The delicious tag at http://del.icio.us/mbauwens/Facebook